textproduct: Rapid City

KEY MESSAGES

-Cool front will settle in the area tonight with much cooler weather for Monday

-Mild on Tuesday with another cold front bringing gusty winds Wednesday

DISCUSSION

(This Afternoon Through Saturday) Issued at 1042 AM MDT Sun Apr 5 2026

Western CONUS ridge will remain in place through the week as periodic ridge topping impulses advect into the Northern Plains. Backdoor cold front will slide into the area late today, cooling things down for Monday. Expect increasing clouds later tonight with some fog possible in the higher elevations of the BH later tonight. Baroclinic zone will stall over the region supporting some chances for light snow across NW SD as weak FGEN develops late tonight into Monday morning. Not expecting more than a dusting where snow materializes. After a cool cloudy day Monday, a clipper system will support much warmer weather by Tues via strong frontside WAA. Highs will reach the 50s and 60s, with a few 70s possible over the western third. Clipper system will advect over the top of the ridge Tues night into Wed supporting a strong cold front into the region Wed. Some precip is possible with this system, but any amounts will generally be light. Models are also progging adv level winds across much of NW SD Wed, with gusts over 50 mph possible. Splitting upper trough will move into the western CONUS toward the end of the week, as the ridge shifts east. This looks to support mild weather locally for the end of the week after a brief cool down Thur.

AVIATION

(For the 00Z TAFS Through 00Z Monday Evening) Issued At 511 PM MDT Sun Apr 5 2026

Moist northeast upslope flow will lead to MVFR cigs across NW SD and eventually most of western SD by Monday morning. Local IFR conditions are possible around the Black Hills. Some light snow will be possible across NW SD Monday morning, with local vis restrictions possible. Conditions will improve Monday evening.

UNR WATCHES/WARNINGS/ADVISORIES

SD...None. WY...None.